In his blog, Hilton wrote that Bieber was so sick that he vomited backstage “in between songs.”

Bieber, Hilton said, has been diagnosed with bad chest infection even before his one-night Manila concert started.

Quoting his source, the American blogger said the 17-year-old singer “was advised to either cancel the show or do an abbreviated set… But he insisted on going on. So they cut down the show, but once the show started he kept going."

“Bieber ended up doing his normal, 90-minute set for his Filipino concertgoers! Despite being very ill! Thankfully, though, Justin has the next two days off so he can and should and plans to rest,” Hilton wrote.

On Tuesday night, hundreds of his fans, collectively known as “Beliebers,” showed up at SM Mall of Asia to watch the teen superstar perform. Most of his young Filipino fans were wearing violet shirts with his name written on it. Violet is said to be Bieber’s signature color.

“@justinbieber we lined up this evening at #MOA ¤bcoz of you ¤bcoz we #love u,” tweeted Itsmeadrean.

Local celebrities, including sisters Claudine Barretto and Marjorie Barretto, also trooped to the venue.

Despite being sick, Bieber did not disappoint. On Twitter, Filipino Beliebers were all praises for the young singer after the concert.